iOS: Safari + NextDNS/AdGuard-DNS
Android: Brave + NextDNS/AdGuard-DNS
Desktop: Mullvad Browser with 3rd party scripts & frames disabled on uBO + NextDNS/AdGuard-DNS
uBO has AdGuard filters, on top of all other hardening features. AdGuard is redundant as a browser extension, and worse than using a DNS on mobile.